1078594643 has 4 divisors (see below), whose sum is σ = 1232679600. Its totient is φ = 924509688.

The previous prime is 1078594633. The next prime is 1078594697. The reversal of 1078594643 is 3464958701.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3464958701 = 12721 ⋅272381.

It is a cyclic number.

It is not a de Polignac number, because 1078594643 - 2⁶ = 1078594579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1078594613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77042468 + ... + 77042481.

It is an arithmetic number, because the mean of its divisors is an integer number (308169900).

Almost surely, 2^1078594643 is an apocalyptic number.

1078594643 is a deficient number, since it is larger than the sum of its proper divisors (154084957).

1078594643 is an equidigital number, since it uses as much as digits as its factorization.

1078594643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154084956.

The product of its (nonzero) digits is 725760, while the sum is 47.

The square root of 1078594643 is about 32841.9646641306. The cubic root of 1078594643 is about 1025.5403513797.

The spelling of 1078594643 in words is "one billion, seventy-eight million, five hundred ninety-four thousand, six hundred forty-three".